Steeda pullies install

[Bradley G]

Do I need to change the serpentine belt to install Steeda underdrive pullies? thanks in advance

Bradley G

[Rider90]

-POST DELETED-

[Blackened300a]

Your Stock Belt will work with the pulleys, If you have the Alternator clutch pulley, you'll need a special tool to remove it. I left it on and still felt a nice improvement down low and midrange power. Its recommended to raise the idle 200 RPMS cause the voltage may be a little low with the pulleys.

[Cobra25]

Your Stock Belt will work with the pulleys, If you have the Alternator clutch pulley, you'll need a special tool to remove it. I left it on and still felt a nice improvement down low and midrange power. Its recommended to raise the idle 200 RPMS cause the voltage may be a little low with the pulleys. True the stock belt will work on it, but the Alternator Cluch pulley is the same size as the one to replace it & for safety reasons your better off leaveing the cluch pulley. And you might want to raise your RPM's a little.

[Bradley G]

I have read every post I could find on ud pullies and I have not seen a different belt is required.CJ @ Dyno-Pro mentioned to me that the tensioner may not be able to make up the slack.

He also mentioned it may not be a bad idea to purchace a new belt anyway.
Bradley G

[Mard]

When I installed my Steeda pulleys a couple weeks ago I simply used the original belt. No idle/charging issues for me.

You're going to like it alot.

[Bradley G]

thanks for the replies!I can hardly wait!

Bradley G


When I installed my Steeda pulleys a couple weeks ago I simply used the original belt. No idle/charging issues for me.

You're going to like it alot.

[SergntMac]

Okay, I'm a tad late on posting my "IMHO" advice, seems a lot has been covered already.

All I can add now, is that my first (N/A) MM was a testbed for two sets of underdrive pulleys from Reinhart. The first set may have been from March and their 5.0 parts bins, I don't recall. But, the second set was surely from Steeda, and they performed so well, I kept them.

Neither set involved, or, excused the OEM "one way clutch" altenator pulley from duty. You don't change this pulley on a Marauder.

My OEM altenator did not require a pulley change, because neither set I tested involved my altenator pulley to begin with. Back then, if you got a two pulley set, you were cool. If you got a three pulley set, the included altenator pulley was extraneous, not used, or, needed, on a Marauder install.

Therefore, neither set required a change in belts based on pulley size, and the OEM tensioner was sufficient in its tension. However, by the time I installed my Steeda pulleys, my OEM belt was stretched and worn to a point that a replacement belt was now necessary. My tensioner did not take up this slack after UDPs were added, my replacement belt was the same size, and my belt tensioner worked fine. My "slack" came from wear and tear, nothing more.

BTW...In serpentine belts, "size" equals belt length, expressed in inches, and the Marauder UDP upgrade does not require a belt "size" change, unless your belt is worn and stretched by normal wear and tear.

Anyone sharing 411 about altenator voltage output drop is chasing their tail.

The Marauder altenator pulley does not get changed out, nor, is it affected in any way by adding Marauder correct UDPs. Stories continue to circulate between MM owners only because they do not know what's under their MM hood, or, how to deal with this upgrade. So be it, but take this from me, here, and now. There are two pulleys involved in our MM UDP mod, and the altenator is not involved in this mod. Altenator output is not disturbed in any way. If you need to update your serpentine belt due to wear and tear, that's an "update", and not an "upgrade" that's needed for UDPs.

Know the difference?

Hope my .02C helps.

[Bradley G]

Thanks for the through explanation Mac.

Looks like they may go on today! Maybe even a dyno to see what gains are achieved.
I was @250rwh last test,and PhP spacer and pullies have been added since.
Bradley G

Okay, I'm a tad late on posting my "IMHO" advice, seems a lot has been covered already.

All I can add now, is that my first (N/A) MM was a testbed for two sets of underdrive pulleys from Reinhart. The first set may have been from March and their 5.0 parts bins, I don't recall. But, the second set was surely from Steeda, and they performed so well, I kept them.

Neither set involved, or, excused the OEM "one way clutch" altenator pulley from duty. You don't change this pulley on a Marauder.

My OEM altenator did not require a pulley change, because neither set I tested involved my altenator pulley to begin with. Back then, if you got a two pulley set, you were cool. If you got a three pulley set, the included altenator pulley was extraneous, not used, or, needed, on a Marauder install.

Therefore, neither set required a change in belts based on pulley size, and the OEM tensioner was sufficient in its tension. However, by the time I installed my Steeda pulleys, my OEM belt was stretched and worn to a point that a replacement belt was now necessary. My tensioner did not take up this slack after UDPs were added, my replacement belt was the same size, and my belt tensioner worked fine. My "slack" came from wear and tear, nothing more.

BTW...In serpentine belts, "size" equals belt length, expressed in inches, and the Marauder UDP upgrade does not require a belt "size" change, unless your belt is worn and stretched by normal wear and tear.

Anyone sharing 411 about altenator voltage output drop is chasing their tail.

The Marauder altenator pulley does not get changed out, nor, is it affected in any way by adding Marauder correct UDPs. Stories continue to circulate between MM owners only because they do not know what's under their MM hood, or, how to deal with this upgrade. So be it, but take this from me, here, and now. There are two pulleys involved in our MM UDP mod, and the altenator is not involved in this mod. Altenator output is not disturbed in any way. If you need to update your serpentine belt due to wear and tear, that's an "update", and not an "upgrade" that's needed for UDPs.

Know the difference?

Hope my .02C helps.

[Shaft333]

Makes sense... why would you want to change the alternator pulley when you can get a tune that enables the clutch at WOT.

[Bradley G]

Even if thier was no clutch pulley on the alternator,stock pulley is the same diameter as the Steeda.
Bradley G
Makes sense... why would you want to change the alternator pulley when you can get a tune that enables the clutch at WOT.